Selective chemical control of annual ryegrass (Lolium rigidum) in oilseed rape, field peas and lupins

1974 ◽  
Vol 14 (71) ◽  
pp. 771 ◽  
Author(s):  
TG Reeves ◽  
JM Lumb
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Chemical Control ◽  
Annual Ryegrass ◽  
Lolium Rigidum ◽  
Grain Yields ◽  
Pisum Arvense ◽  
Field Peas ◽  
North Eastern ◽  
Selective Chemical

The effectiveness of herbicides for selective control of annual ryegrass (Lolium rigidum) in oilseed rape (Brassica napus), field peas (Pisum arvense) and narrow-leafed lupins (Lupinus angustifolius) was investigated in nine experiments in north-eastern and southern Victoria. Of the herbicides tested, di-allate, trifluralin and simazine significantly reduced ryegrass populations in all experiments where they were used. Pre-planting incorporated treatments were generally more effective than post-sowing or post-emergence treatments in oilseed rape and field peas. Control of ryegrass generally resulted in higher grain yields in all three crops, although lupins showed the greatest response. Dalapon, applied to oilseed rape after emergence, caused flower distortion and reduced yields in some experiments.

The selective chemical control of Wimmera ryegrass in wheat with di-allate and tri-allate

1972 ◽  
Vol 12 (54) ◽  
pp. 55 ◽  
Author(s):  
TG Reeves ◽  
CL Tuohey
Keyword(s):  
Chemical Control ◽  
Crop Damage ◽  
Lolium Rigidum ◽  
Grain Yields ◽  
Economic Basis ◽  
Wimmera Ryegrass ◽  
Selective Chemical

Two herbicides, di-allate and tri-allate, were compared for the pre-emergence control of Wimmera ryegrass (Lolium rigidum) in wheat at three different locations in the Victorian wheatgrowing areas. Both herbicides significantly reduced ryegrass populations in the crop, but di-allate was consistently more effective than tri-allate. Grain yields were generally enhanced by spraying, but 1.12 kg a.i. per hectare of either material sometimes caused crop damage when applied before sowing. On an economic basis, di-allate at 0.56 kg a.i. per hectare was superior to all other treatments whether applied just before or just after sowing.

Pasture management and cultural methods for the control of annual ryegrass (Lolium rigidum) in wheat

1975 ◽  
Vol 15 (75) ◽  
pp. 527 ◽  
Author(s):  
TG Reeves ◽  
IS Smith
Keyword(s):  
Chemical Control ◽  
Untreated Control ◽  
Annual Ryegrass ◽  
Lolium Rigidum ◽  
Pasture Management ◽  
Grain Yields ◽  
Cultural Methods ◽  
Heavy Grazing ◽  
Second Year

The effects of four pasture management treatments-haycutting, heavy grazing, burning and a control-and two cultural treatments,-mouldboard or disc ploughing-on the densities of annual ryegrass (Lolium rigidum) under subsequent wheat crops, was measured in 16 experiments conducted from 1961 to 1968. Pasture management treatments before cropping significantly reduced subsequent ryegrass populations in first, second, third and fourth year crops, compared with the untreated control and increased grain yields in the first and second year crops. Subsequent ryegrass populations were reduced more by mouldboard ploughing than by disc ploughing and this was reflected in higher yield for all crops. The results indicate that these management and cultural methods may obviate the need for chemical control in first and second year crops.

Canola (Brassica napus) germplasm shows variable allelopathic effects against annual ryegrass (Lolium rigidum)

2014 ◽  
Vol 380 (1-2) ◽  
pp. 47-56 ◽  
Author(s):  
M. Asaduzzaman ◽  
Min An ◽  
James E. Pratley ◽  
David J. Luckett ◽  
Deirdre Lemerle
Keyword(s):  
Brassica Napus ◽  
Annual Ryegrass ◽  
Lolium Rigidum ◽  
Allelopathic Effects

The seedling root response of annual ryegrass ( Lolium rigidum ) to neighbouring seedlings of a highly-allelopathic canola ( Brassica napus )

Flora ◽  
2016 ◽  
Vol 219 ◽  
pp. 18-24 ◽  
Author(s):  
Md Asaduzzaman ◽  
Min An ◽  
James E. Pratley ◽  
David J. Luckett ◽  
Deirdre Lemerle ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Annual Ryegrass ◽  
Lolium Rigidum ◽  
Seedling Root ◽  
Root Response

Selective chemical control of capeweed in wheat and oats

1972 ◽  
Vol 12 (54) ◽  
pp. 60 ◽  
Author(s):  
TG Reeves ◽  
JM Lumb
Keyword(s):  
Grain Yield ◽  
Chemical Control ◽  
Early Growth ◽  
Crop Damage ◽  
Growth Stages ◽  
North Eastern ◽  
Selective Chemical

In eight experiments conducted in north-eastern Victoria from 1965-1970, a range of herbicides were tested for selective post-emergence control of capeweed (Arctotheca calendula) in wheat and oats. Linuron, diquat, and bromoxynil were the best treatments tested and generally reduced capeweed density when applied in the early growth stages, causing little or no crop damage. Significant grain yield increases from spraying were obtained in each experiment with wheat, but in oats only one significant increase was obtained. Post-tillering treatments with 2,4-D and picloram plus 2,4-D did not increase grain yield.

Weeds in grain-lupins. 1. The effect of weeds on grain-lupin yields

1977 ◽  
Vol 17 (84) ◽  
pp. 112 ◽  
Author(s):  
JM Allen
Keyword(s):  
Grain Yield ◽  
Lupinus Angustifolius ◽  
Annual Ryegrass ◽  
Grain Production ◽  
Lolium Rigidum ◽  
Grain Yields ◽  
Different Levels

Narrow-leafed lupins (Lupinus angustifolius) were grown at two densities in weed free conditions and with different levels of either capeweed (Arctotheca calendula) or annual ryegrass (Lolium rigidum). Capeweed that germinated six weeks before the lupins prevented grain production. Germinated with the lupins, 30 capeweed plants m-2 reduced grain yields by 20 per cent compared with 10 capeweed plants m-2, which was not significantly different from the weed free control. Thirty capeweed plants m-2 that germinated six weeks after the lupins did not reduce grain yields. Ryegrass reduced grain yields by 70 per cent when it germinated six weeks before the lupins. Germinated with the lupins, 90 ryegrass plants m-2 reduced grain yields by 47 per cent compared with the weed free control. Ninety ryegrass plants m-2 that germinated six weeks after the lupins did not reduce grain yield.

scholarly journals Hoeing as a Possibility for Mechanical Weed Control in Winter Oilseed Rape (Brassica napus L.)

Crops ◽  
2022 ◽  
Vol 2 (1) ◽  
pp. 1-13
Author(s):  
Sebastian Schwabe ◽  
Sabine Gruber ◽  
Wilhelm Claupein
Keyword(s):  
Brassica Napus ◽  
Data Collection ◽  
Weed Control ◽  
Oilseed Rape ◽  
Chemical Control ◽  
Plant Density ◽  
The Other ◽  
Herbicide Application ◽  
Weed Biomass ◽  
Weed Plant

The framework conditions for chemical weed control in oilseed rape (OSR) are becoming increasingly unfavorable in Central Europe. On the one hand, weed resistance is spreading and, on the other, there is a growing social desire to reduce or eliminate the use of chemical crop protection products. In a field experiment, hoeing, as a weed control measure performed two times per growing season (one time in autumn and one time in spring) in oilseed rape (Brassica napus; two varieties), was compared to chemical control by herbicides and a combination of hoeing and herbicide application (five treatments altogether). The chemical control by herbicides consisted of a broad-spectrum pre-emergence treatment and a post-emergence graminicide application. The trial was set up in each of three periods (years 2014/2015, 2015/2016, and 2016/2017) at the experimental station Ihinger Hof, University of Hohenheim, Stuttgart, Germany. The effect of the treatments on weed plant density, weed biomass at the time of harvesting, and on OSR grain yield was investigated. Weed plant density was measured four times per trial year, each time before and after hoeing. In 2015/2016 after spring hoeing, and in 2016/2017 at all data collection times, weed plant density was significantly higher in hoeing without herbicide application than in the other variants. No significant differences occurred at the other data collection times. The weed plant density ranged from 0.5 to 57.8 plants m−2. Regardless of the trial year, pure hoeing always resulted in a significantly higher weed biomass at the time of harvesting than the herbicide applications or the combinations. The weed biomass at the time of harvesting ranged between 0.1 and 54.7 g m−2. No significant differences in grain yield between hoeing and herbicide application occurred in all three trial years. According to the results, hoeing is a suitable extension of existing integrated weed control strategies in OSR.

Control of annual grasses in pasture and legume crops with fluazifop-butyl

1984 ◽  
Vol 24 (127) ◽  
pp. 612 ◽  
Author(s):  
NR Venn
Keyword(s):  
Triticum Aestivum ◽  
Pisum Sativum ◽  
Wheat Crop ◽  
Annual Ryegrass ◽  
Lolium Rigidum ◽  
Medicago Scutellata ◽  
Field Peas ◽  
Annual Grasses ◽  
Excellent Control ◽  
Direct Drilling

Fluazifop-butyl gave excellent control of annual ryegrass (Lolium rigidum) and barley grass (Hordeum glaucum) in field peas (Pisum sativum), sown snail medic (Medicago scutellata) and regenerated annual medic-grass pasture at 0.25, 0.5 and 1.0 kg/ha, respectively. This effect was most pronounced in areas planted by direct drilling because this seeding technique accentuated the build-up of ryegrass and barley grass. Grain yields of wheat (Triticum aestivum cv. Condor) were higher when sown into areas of annual medic-grass pasture sprayed with fluazifop-butyl in the year preceding the wheat crop.

Chemical control of herbicide-resistant Lolium rigidum Gaud. in north-eastern Spain

2010 ◽  
Vol 66 (12) ◽  
pp. 1380-1388 ◽  
Author(s):  
Alicia Cirujeda ◽  
Andreu Taberner
Keyword(s):  
Chemical Control ◽  
Lolium Rigidum ◽  
Herbicide Resistant ◽  
North Eastern
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